#import numpy
def gcd(a,b):
    if a==0 or b==0:
        return a+b
    return gcd(b%a,a)
n = int(input())
cnt = [0 for x in range(n+2)]
cnt[1] = 1
for i in range(1,n+1):
    clist = input().split(' ')
    sz = int(clist[0])
    if sz==0 or cnt[i]==0:
        continue
    g = sz//gcd(cnt[i],sz)
    for j in range(1,n+1):
        cnt[j] *= g
    vv = cnt[i]//sz
    for j in range(1,sz+1):
        cnt[int(clist[j])] += vv
print(cnt[1])        

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#import numpy
def gcd(a,b):
    if a==0 or b==0:
        return a+b
    return gcd(b%a,a)
n = int(input())
cnt = [0 for x in range(n+2)]
cnt[1] = 1
for i in range(1,n+1):
    clist = input().split(' ')
    sz = int(clist[0])
    if sz==0 or cnt[i]==0:
        continue
    g = sz//gcd(cnt[i],sz)
    for j in range(1,n+1):
        cnt[j] *= g
    vv = cnt[i]//sz
    for j in range(1,sz+1):
        cnt[int(clist[j])] += vv
print(cnt[1])